题干

农田生态系统中,属于生产者的是(  )

A:青蛙

B:昆虫

C:水稻

D:泥鳅

上一题 下一题 0.0难度 选择题 更新时间:2018-10-16 12:20:08

答案(点此获取答案解析)

C

同类题1

阅读下面的文字,完成小题。

跟着炊烟回家

马国福

    ①父亲说,孩子,疲惫的时候,你就跟着炊烟回家。他说这话的时候一脸的恬静安详,似乎炊烟成了一个乡间的导师,让那些懵懂的心灵找到情感的慰藉,人生的方向。

    ②记忆里的村庄,炊烟和着日升日落的节拍,发出开启新生活的信号。没有风的时候,一束束炊烟像一个个浓墨重彩的感叹号,提醒人们繁忙的一天开始了。黄昏的时候,我们从地里干完活,走在回家的路上,大老远就能看见一束束炊烟,慢慢地穿过林梢。夕阳的余晖洒在林梢间,像涂上了一层层金粉。那时候,我就想,一辈子再也不离开这个村庄了,只为在每天的日升日落中看这炊烟升起又熄灭,熄灭又升起,多好啊!

    ③肩膀上扛着铁锹的父亲说:傻孩子,一辈子窝在这个村庄里有啥出息啊!有本事的人都到城里去工作,哪有像你这样没有上进心的人啊!

    ④土地就像一根宿命的绳子,把父辈一生都拴在土地上,让他们无法脱离那日复一日年复一年的沉重劳动。多年后,我通过知识解开这根绳子离开村庄,到城里谋生。想到村庄里的乡亲们沿循着日出而作日落而息的亘古传统,从事永无止境的繁重农活,他们的生活依然很不宽裕,我的心就微微作痛。我知道,父亲当初给我说那番话有他的道理。也许,父亲看透了生活的本质,当时父亲之所以给我狭隘的幸福定义自有他的苦衷吧。

    ⑤有时候,在城市中受了伤,我就想回到村庄,对着那见证我年少岁月的炊烟,大哭一场。我知道,我的滂沱泪雨,会被炊烟带走,让我无所牵绊地上路、追求。像一缕空气消失在风中,像一抹炊烟擦干我的眼泪,坐在故乡的山冈上遥望炊烟,我的心会归于平静。城市生活衍生的计较、竞争和苦恼已不再重要,重要的是从炊烟熄灭又升起的自然景观中汲取继续抬头前行的力量。计较会让自己更加痛苦,竞争会让自己更加疲惫。一切计较、竞争和苦恼,比与我的生命水乳交融的炊烟还轻,我为什么不放下呢?村庄里可以没有高楼大厦,家里可以没有美味佳肴,灵魂的仓库里可以没有金银细软,但村庄里不能没有炊烟,人的精神家园里也不能没有炊烟。炊烟是村庄里所有人灵魂的导师,她让我们在人生的坐标里找准自己的标尺,时刻保持对生活的信心。

    ⑥我一直怀念炊烟。远离了村庄的炊烟,我的生命似乎成了一条断流的河,一块荒芜的田地。只有炊烟,以及村庄里那些与炊烟站在一起的风物,才能让我的生命保持长久的美感、幸福和丰盈。心里空虚的时候,我常常打电话给父亲,说我看不到炊烟的落寞。父亲说,孩子,疲惫的时候,你就跟着炊烟回家。

    ⑦通完电话,晚上我就会做梦,梦见炊烟舞动的画面,梦中的炊烟就是一场大雨,湿润我干涸的河流,让我的内心汹涌起思乡的碧波,一波一波,顺着河流的方向回家。

    ⑧漂泊的宿命已经不能让我经常回家了,命运把我羁押到远方。一年回一次家,看一次炊烟,对我而言是命运的大赦。我只能在梦里跟着炊烟回家。炊烟是一个村庄全部的重量,是生活在炊烟扎根的土地上所有人们的希望。炊烟对我的意义就是灵魂的意义。

    ⑨一个人的灵魂断炊是一件可怕的事情。我的灵魂里每天舞动着的,那是一束束炊烟。

同类题3

阅读理解

    When we think about happiness, we usually think of something surprising and unexpected, a top great delight.

    For a child, happiness has a magic quality. I remember playing police and robbers in the woods, getting a speaking part in the school play. Of course, kids also experience lows, but their delight at tops of pleasure is easily seen, such as winning a race or getting a new bike.

    For teenagers, or people under 20, the idea of happiness changes. Suddenly it's conditional on such things as excitement, love, and popularity. I can still feel the pain of not being invited to a party that almost everyone else was going to. I also recall the great happiness of being invited at another event to dance with a very handsome young man.

    In adulthood the things that bring great joy — birth, love, marriage — also bring responsibility and the risk of loss. Love may not last; loved ones die. For adults, happiness is complex.

    My dictionary explains “happy” as “lucky” or “ fortunate”, but I think a better explanation of happiness is “ the ability to enjoy something”. The more we can enjoy what we have, the happier we are. It's easy for us not to notice the pleasure we get from loving and being loved, the company of friends, the freedom to love where we please, and even good health. Nowadays, with so many choices and much pleasure, we have turned happiness into one more thing we have. We think we own the right to have it, which makes us extremely unhappy. So we try hard to get it and consider it to be the same as wealth and success, without noticing that the people who have those things aren't necessarily happier.

    While happiness may be more complex for us, the answer is the same as ever. Happiness isn't about what happens to us. It's the ability to find a positive for every negative, and view a difficulty as a challenge. Don't be sad for what we don't have, but enjoy what we do possess.